Outer sole



FIG. 1 is a bottom plan view of an outer sole showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a rear elevational view thereof.

Any broken-line illustration in the drawing disclosure is not a part of the design sought to be patented. 

The ornamental design for an outer sole, as shown and described. 